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This page documents the succession of chronological events that have taken place within The Expanse universe.

Save for only one, no certain chronological parameter has ever been affirmed within the series. The only known certain date is 2307, the commencement production date of Ganymede Gin, an alcoholic brand.

However, after multiple implications, it is of most likelihood that The Expanse commences in 2350, mostly evidenced by the previous name of the series, 2350. However, to best reduce the degree of speculation within the timeline, this page will use two different indicators relative to one of the most prominent events, the discovery of the protomolecule. Therefore, any event prior will be indicated by BXT (before extrasolar technology), while those standing further on the chronological line of events will be denoted by XTE (extrasolar technology era).

Although still not one-hundred-percent confirmed, the year 2350 corresponds to 8 XTE.

Interplanetary era Edit

Ring Builder era Edit

> 2,000,000,000 BXT Edit

  • The Ring Builders evolve on their homeworld.
  • The Ring Builders achieve spaceflight.

ca. 2,000,000,000 BXT Edit

  • The Ring Builders uncover wormhole physics. Subsequently, they commence building a massive interstellar network spanning across many star systems in the Milky Way.
  • The Ring Builders' empire becomes the dominant galactic power. The species thrives.
  • Around this time, the Ring Builders encompass the protomolecule in Phoebe and send it on a trajectory towards primitive Earth.
  • Phoebe is caught by Saturn's gravity, sparing Earth's primitive life of the protomolecule.

1,500,000,000 BXT Edit

  • The empire comes under attack by a mysterious force. The Ring Builders attempt to contain the attack by purging entire star systems, but are ultimately defeated and eradicated.

Pre-spacefaring era Edit

ca. 200,000 BXT Edit

  • The modern human evolves on Earth.
  • Humanity migrates out of Africa.

9,000 BXT Edit

  • The very first human settlements are built.

500 - 350 BXT Edit

  • The two global conflicts are ignited between human alliances. About one hundred million people are killed.
  • The United States and the Soviet Union emerge as the two superpowers. The Cold War begins
  • Humanity lands on Luna.
  • Eventually, the USSR dissolves, leaving the United States as the sole superpower for decades to come.

Extraterrestrial colonization era Edit

320 BXT Edit

  • Mars is settled by humanity.

300 - 200 BXT Edit

  • The damage done to Earth's ecosystem reaches critical levels.
  • The various nations on Earth pour their economies into the advancement of space travel.
  • Eventually, the United Nations becomes the unified government of humanity.

200 - 130 BXT Edit

  • Mars pleads for independence from the United Nations. The UN refuses.
  • Tensions grow between the UN and its colony.

129 BXT Edit

  • Solomon Epstein achieves a breakthrough regarding space propulsion and develops the Epstein drive.

128 BXT Edit

  • Mars exchanges the Epstein drive for independence with the UN.
  • The Martian Congressional Republic is proclaimed.

127 - 50 BXT Edit

  • The United Nations and the MCR, both using the Epstein drive, colonize the remaining outer part of the Sol system.
  • Ganymede becomes the breadbasket of the outer planets.
  • Serious anatomical discrepancies evolve between Inners and Belters due to growth in low gravity. Such differences exist between Earthers and Martians, too, but are not as evident.

Peace era Edit

30 BXT Edit

  • The OPA is founded.

12 BXT Edit

  • Amos Burton departs Earth.

4 BXT Edit

  • James Holden joins the United Nations Navy.

3 BXT Edit

  • Chrisjen Avasarala becomes the Deputy Undersecretary of Executive Administration of the UN.

0 XTE Edit

  • The MCR surveys Phoebe and discovers the protomolecule.
  • The Martian government approaches Protogen as a co-sponsor of a long-term facility to investigate the protomolecule.

3 XTE Edit

  • James Holden is dishonourably expelled from the UNN.
  • Subsequently, Holden is contracted by the Pur'n'Kleen Water Company.

Tensioned era Edit

8 XTE Edit

  • J. A. Mao boards the Scopuli. Eventually, she ends up on Eros, where she dies of protomolecule exposure.
  • The Canterbury is destroyed by Protogen.
  • The Donnager is destroyed by Protogen.

9 XTE Edit

  • J. A. Mao's body is found by Miller, Holden, and his crew.
  • Eros incident: The protomolecule is let loose on Eros station, killing all of its inhabitants. Only Miller and Holden manage to escape and return to the Rocinante.

Tv iconXTE-Alpha😷

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
9XTE[3]

XTE–α(Ⅰ)

9.0.0.0 Phoebe experiment Protomolecule Testing Protogen & Martian Scientists
9.1.0.0(?) Scopuli/Anubis encounter
9.1.1.0 Canterbury receives Scopuli's distress call Knight Responds
9.1.2.0 Canterbury/Anubis encounter
9.1.2.1 Knight sends distress call
9.1.2.3 Donnager responds to Knight's "mayday"
9.1.3.0 Donnager attacked by unknown stealth ship(s)
9.1.4.0 Tachi escapes Donnager
9.1.4.1 Tachi contacts Tycho/Johnson
9.1.4.2 Tachi becomes Rocinante
9.1.5.0 Rocinante arrives at Tycho
9.1.8.0 Julie Mao escapes Anubis After eight days of entrapment/confinement, she breaks out. Discovers the contamination, stows the Anubis at BA834024112 and makes way to Eros aboard Anubis 1A.
Miller arrives on Eros
Rocinante crew arrive on Eros
Blue Falcon Miller meets Rocinante crew at Blue Falcon and together they defeat armed assailants
Miller and the Rocinante crew find Julie Mao
Dock explosion is staged
Eros experiment inhabitants are herded into shelters, intentionally contaminated with the extrasolar biotechnology and heavily irradiated. Protogen & Antony Dresden, CPM Mercs hired from Ceres gangsters
10XTE[3]

XTE–α(Ⅱ)

Thoth Station
Eros is rigged with explosives
Nauvoo made into battering ram Nauvoo targeted at Eros
Eros evades Nauvoo
Earth launches nuclear arsenal at Eros
Eros collides with Venus

Tv iconXTE-Beta👾

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
11??XTE[3]
XTE–β(Ⅱ)
~11.6.0.0 child abductions Caliban Protomolecule Human hybrid Testing Mao-Kwikowski & Former Protogen Scientists including Strickland + Umea
~11.6.0.1(?) Protomolecule Hybrid released
11.6.0.2 Ganymede conflict Conflict erupts outside Ganymede station
11.7.0.0 Armistice summit UN (Earth) & MCR (Mars)
11.8.0.0 Guanshiyin confrontation
Arboghast
12XTE[3]

XTE–β(Ⅲ)

~12.0.0.0

Tv iconXTE-Gamma😲

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
13??XTE[3]
XTE–γ(Ⅲ)
~13.0.0.0
14XTE[3]

XTE–γ(Ⅳ)

~14.0.0.0

Tv iconXTE-Delta😬

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
15??XTE[3]
XTE–δ(Ⅳ)
~15.0.0.0
16XTE[3]

XTE–δ(Ⅴ)

~16.0.0.0

Tv iconXTE-Epsilon🔧

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
17??XTE[3]
XTE–ε(Ⅴ)
~17.0.0.0
18XTE[3]

XTE–ε(Ⅵ)

~18.0.0.0

Book-icon-simpleXTE-Alpha😷

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
9XTE[3]

XTE–α(Ⅰ)

9.0.0.0 Phoebe experiment Protomolecule Testing Protogen & Martian Scientists
9.1.0.0(?) Scopuli/Anubis encounter
9.1.1.0 Canterbury receives Scopuli's distress call Knight Responds
9.1.2.0 Canterbury/Anubis encounter
9.1.2.1 Knight (Holden) sends request for orders to Pur 'n' Kleen
9.1.2.3 Pur 'n' Kleen lawyer, Wallace Fitz, directs Knight to meet Donnager and cooperate with their investigation
9.1.3.0 Donnager attacked by unknown stealth ship(s)
9.1.4.0 Tachi escapes Donnager as Captain Yao scuttles the Martian battleship
9.1.4.1 Tachi contacts Tycho/Johnson
9.1.4.2 Tachi becomes Rocinante
9.1.5.0 Rocinante arrives at Tycho
9.1.8.0 Julie Mao escapes Anubis After eight days of entrapment/confinement, she breaks out. Discovers the contamination in abandoned stealth vessel, stows the Anubis at BA834024112 and makes way to Eros aboard Anubis 1A.
Miller arrives on Eros
Rocinante crew arrive on Eros
Blue Falcon Miller meets Rocinante crew at Blue Falcon and together they defeat armed assailants
Miller and the Rocinante crew find Julie Mao
Dock explosion is staged
Eros experiment inhabitants are herded into shelters, intentionally contaminated with the extrasolar biotechnology and heavily irradiated. Protogen & Antony Dresden, CPM Mercs hired from Ceres gangsters
10XTE[3]

XTE–α(Ⅱ)

Thoth Station
Eros is rigged with explosives
Nauvoo made into battering ram Nauvoo targeted at Eros
Eros evades Nauvoo
Earth launches nuclear arsenal at Eros
Eros collides with Venus

Book-icon-simpleXTE-Beta👾

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
11??XTE[3]
XTE–β(Ⅱ)
~11.6.0.0 child abductions Caliban Protomolecule Human hybrid Testing Mao-Kwikowski & Former Protogen Scientists including Strickland + Umea
~11.6.0.1(?) Protomolecule Hybrid released
11.6.0.2 Ganymede conflict Conflict erupts outside Ganymede station. Lieutenant Givens orders Bobbie's squad back to outpost 4. Radio jammed. The entire outpost is wiped out including the giant mech with canon piloted by Sa'id, Yojimbo.
11.6.1.2 Bobbie's recovery Bobbie reminds Petty Officer Singh that her Goliath MkⅢ uses an older video encoding hence is able to retrieve the footage of battle. Bobbie hopes they didn't destroy her suit while extracting her.
11.7.0.0 Armistice summit Bobbie is irritated by avoidance of discussion regarding what is described sterilely in writing as the "Anomaly" she walks out. Both Martens and Thorsson are at the summit with Bobbie. Martens is a good guy. UN (Earth) & MCR (Mars)
11.7.1.0 Dasihari Lounge Avasarala offers Bobbie a job. UN (Earth) & MCR (Mars)
11.8.0.0 Guanshiyin confrontation
Arboghast
12XTE[3]

XTE–β(Ⅲ)

~12.0.0.0 Razorback
UN fleet loyal to Admiral Nguyễn battles near Io with UN Jupiter fleet under command of Admiral Souther along with Rocinante and MCRN contingent
MCRN Sally Ride resupplies Rocinante.
UN Agatha King and Nguyễn's last stand Protomolecule Hybrids launched at Mars from Io Razorback and Holden

Book-icon-simpleXTE-Gamma😲

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
13??XTE[3]
XTE–γ(Ⅲ)
~13.0.0.0 "Squid" launches from Venus
~13.0.1.0(?) Ring Opens
Mateo Espinoza-Jung attempts slingshot through rings aboard Y Que.
Flotilla UN sends Thomas King, Seung Un, and Cerisier
Seung Un bombed
Rocinante broadcasts OPA demands
Behemoth fires on Rocinante
Rocinante hides behind Martian ship then escapes into rings
Flotilla pursues
Holden follows the Investigator to the Ring Station and is pursued by Martian Marines
Slow zone speed limit drops Martian Marines attempt to apprehend Holden but trigger Ring Station defenses
14XTE[3]

XTE–γ(Ⅳ)

~14.0.0.0

Book-icon-simpleXTE-Delta😬

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
15??XTE[3]
XTE–δ(Ⅳ)
~15.0.0.0 "Edward Israel" takes orbit over Ilus Ⅳ
~15.0.1.0(?) Edward Israel shuttle crashes
16XTE[3]

XTE–δ(Ⅴ)

~16.0.0.0

Book-icon-simpleXTE-Epsilon🔧

Era Date Event
(imprecise)[1] (precise)[2] Name/ID Short Description Principal Stakeholders/Participants
17XTE[3]
XTE–ε(Ⅴ)
~17.0.0.0 Martian dockyards attacked on Callisto
~17.1.0.0(?) Earth bombarded
18XTE[3]

XTE–ε(Ⅵ)

~18.0.0.0

NotesEdit

Timeline Notation Approximately Corresponds to
XTE–αLeviathan Wakes
XTE–βCaliban's War
XTE–γAbaddon's Gate
XTE–δCibola Burn
XTE–εNemesis Games
XTE–ζBabylon's Ashes
XTE–ηPersepolis Rising
XTE–(Ⅰ)Season 1
XTE–(Ⅱ)Season 2
XTE–(Ⅲ)Season 3
  • Where these roughly correspond to the relative timeline for comparison and contrast purposes between book and television incarnations even when events themselves might not correspond identically in both timelines.

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 roughly the "Year" within the era
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 estimated to a specific year, month, day, hour
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 Extra-solar Technology (Protomolecule) Era Year


See alsoEdit

Thread:10513

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